JP2516842Y2 - Rod-shaped material feeding device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a stick-out device for gradually advancing a stick-like product housed in a shaft cylinder such as an eraser, lipstick, and pay-out knife.

[Conventional technology]

Conventionally, this type of feeding device is disclosed in JP-A-62-292497,
As described in Japanese Utility Model Laid-Open No. 64-52792, an engaging projection provided on a slider is engaged with an arbitrary engaging hole provided on a shaft cylinder to hold a rod-shaped object at an arbitrary position. Structured ones have been invented and devised.

[Problems to be solved by the device]

However, in the structure as described above, in order to feed out a rod-shaped object such as an eraser housed in the shaft cylinder at a fine pitch, it is necessary to narrow the intervals of the plurality of engagement holes, and for that reason, The thickness of the compound protrusion in the direction along the axis should be narrow. As a result, when a rolled-out rod-shaped object (eg, eraser) is used, an external force is applied to the slider in an attempt to retract it, and a horizontal stress is applied to the engaging protrusion in the direction along the axis. When the engaging projections and the engaging holes are made of synthetic resin, the engaging projections and the engaging holes may be deformed or damaged due to the stress, so that the engaging projections are not engaged with the engaging holes. There is a possibility that the rod may be unwound and the slider may be retracted and the rod-shaped object may sink into the barrel.

The present invention solves such a problem, and when the rod-shaped object is used so that the rod-shaped object can be fed out at a fine pitch, the member of the means for holding the position of the slider is not easily deformed or damaged, and it is ensured. Another object of the present invention is to obtain a rod-shaped object feeding device capable of holding the slider at that position.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a rod-shaped feeding device, in which a rod-shaped feeding device is provided at the tip end in a barrel having a plurality of engaging holes arranged in parallel with slits whose rear ends are opened in the longitudinal direction of different side surfaces. A fixing portion for fixing an object is provided, a spur gear that is sequentially engaged with the engaging hole and rotatable is disposed at the rear end portion, and an elastic piece provided with a pawl that engages between teeth of the spur gear is provided. The pawl is arranged so that it always engages between the teeth of the spur gear, and an operating portion for bending the elastic piece to separate the pawl from the tooth of the spur gear is slid in the slit. Insert the guide part into the slit, position the operating part outside the barrel, and engage the spur gear teeth with the engagement hole of the barrel by inserting the slider that is connected via the movable guide part. The structure is such that they are put together and attached.

Alternatively, a fixing portion for fixing a rod-like object is provided at the tip end in a barrel provided with a slit and a rack having a rear end opened in the longitudinal direction of different side faces, and the rear end is engaged with the rack to rotate. A pinion is provided, and an elastic piece provided with a pawl that engages between the teeth of the pinion is arranged so that the pawl always engages between the teeth of the pinion, and the elastic piece is bent by the elastic piece. The slider is formed by connecting the operation part for separating the pawl from the teeth of the pinion through the guide part slidable in the slit. It is located outside the cylinder, and the pinion is engaged with the rack and inserted.

As a method for fixing a rod-shaped object such as an eraser to the slider fixing portion, for example, a concave groove is formed in the slider fixing portion and the rear end of the rod-shaped object is press-fitted, or the fixing portion and the rear end of the rod-shaped object are uneven. There is a method in which a locking portion and a locked portion are engaged with each other to be fixed by forming a ring-shaped engaging means.

[Action]

By reducing the pitch of the teeth of the gears arranged on the slider and the pitch of the teeth of the rack with the corresponding engaging holes, it is possible to feed the rod-shaped object fixed to the fixed part of the slider step by step at a fine pitch. it can. When a rod-shaped object that has been fed out is used, an external force that pushes the rod-shaped object backward is applied to try to move the slider backward. It cannot move and therefore the slider cannot retract. Further, since the stress itself applied to the pawl is a component force for rotating the spur gear or the pinion as an external force for pressing the rod-shaped object backward, the stress is not so strong, and the pawl is not deformed or damaged.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 and 7, the upper side, the lower side, the left side, and the right side are referred to as upper, lower, front, and rear, respectively.

In the embodiment of the rod-shaped material feeding device shown in FIGS. 1 to 6, the barrel 1 having the open front and rear ends has a vertically long rectangular cross section (FIG. 4) and one narrow width. On the side, a slit 2 having a rear end opened in the rear end of the barrel 1 is formed in the longitudinal direction.
On the other narrow side opposite to the one narrow side, a plurality of rectangular engaging holes 3 formed in parallel in the longitudinal direction are provided.

The distal end of the slider 4 for feeding holding the stick-shaped material 5, a stepped portion 6 ₂ for positioning the stick-shaped material 5 is provided with a fixing part 6, which is constituted by the locking projection ₆₁ in the center. Fixed part 6
, The abutting ends of the stick-shaped material 5 to the stepped portion 6 _2, is fixed to the stick-shaped material 5 by inserting the locking projection 6 ₁ in the locking hole 5 ₁ of the stick-shaped material 5. (Fig. 4). At the rear end of the slider 4, a projecting piece 7 having a locking projection 7 ₁ on a step 7 ₂ projecting rearward is provided.
And the spur gear 8 is attached to the locking hole 8 ₁ by locking the locking projection 7 ₁ . An elastic piece 12 which projects rearward is provided above the projecting piece 7, and a pawl 9 which is constantly engaged between the teeth of the spur gear is provided at the tip on the free end side thereof. On the side surface of the elastic piece 12 on the side opposite to the pawl 9, there is formed a protruding piece protruding toward the tip of the barrel 1 for bending the elastic piece 12 to separate the pawl 9 from the space between the teeth of the spur gear 8. An operating portion 10 having a width larger than the width of the slit 2 is continuously provided via a guide portion 11 slidable in the slit 2.

The slider 4 is configured such that the guide portion 11 is inserted into the slit 2 from the rear end of the shaft cylinder 1 toward the front end side, the operating portion 10 is projected outside the shaft cylinder 1, and the teeth of the spur gear 8 are The shaft cylinder 1 is engaged with the engagement hole 3 (FIG. 5) and inserted into the shaft cylinder 1.

A tail plug 14 having a clip 13 is press-fitted to the rear end of the barrel 1 (the clip 13 may be molded separately from the barrel 1 separately from the tail plug 14).

To extend the rod-shaped object 5, the operation part 10 of the slider 4
The tip of the is pressed downward to bend the elastic piece 12 and
Is moved upward to release the engagement between the teeth of the spur gear 8, and in that state, the slider 4 is pressed forward. As a result, the teeth of the spur gear 8 are sequentially engaged with the engagement holes 3 of the shaft cylinder 1 and rotated, thereby moving the slider 4 forward. When the downward pressing of the operating portion 10 is released at the position of the arbitrary engagement hole 3, the pawl 9 is again locked between the teeth of the spur gear 8 and the slider 4 is held at that position.

To store the rod-shaped object 5 in the barrel 1, the operating portion 10 may be operated in the same manner to retract the slider 4.

An embodiment of the rod-shaped material feeding device shown in FIGS. 7 to 9 will be described. The same parts and portions as those in the above-mentioned embodiment are designated by the same reference numerals.

The shaft cylinder 1'has a slit 2 formed on one side face of a narrow width, which is similar to that of the above-described embodiment, and a rack 21 is arranged in the longitudinal direction of the inner wall of the other side face of a narrow width.

Similar to the above embodiment, a slider 4'for holding and feeding out the rod 5 is provided with a fixing portion 6 similar to that in the above embodiment, and the rod 5 is fixed in the same manner ( (Fig. 8). At the rear end of the slider 4 ', a pinion 22 corresponding to the rack 21 is attached to a projecting piece 7'provided in the same manner as in the above-described embodiment in the same manner as in the above-described embodiment (Fig. 9). Above the projecting piece 7 ', similarly to the above-mentioned embodiment, a pawl 9'which is constantly engaged between the teeth of the pinion 22 and
The operation section 10 similar to that of the above-described embodiment and the elastic piece 12 having the guide section 11 are provided.

The slider 4'inserts the guide portion 11 into the slit 2 from the rear end of the shaft cylinder 1'with the rod-shaped object 5 facing the front end side, projects the operating portion 10 out of the shaft cylinder 1, and causes the teeth of the pinion 22 to move. The shaft cylinder 1'is engaged with the rack 21 (Fig. 9) and inserted into the shaft cylinder 1.

A tail plug 14 having a clip (not shown) is press-fitted to the rear end of the barrel 1'as in the above-described embodiment.

In order to feed out the rod-shaped object 5, the pawl 9'is moved upward to release the engagement between the teeth of the pinion 22 and the slider 4'is pressed forward in this state in the same manner as in the above embodiment. The teeth of the pinion 22 are sequentially meshed with the teeth of the rack 21 to rotate the pinion 22, and the slider 4'is moved forward. Operating part 10 at any rack 21 tooth position
When the downward pressure on the is released, the pawl 9'is again locked between the teeth of the pinion 22 and the slider 4'can be held in that position.

In order to store the rod-shaped object 5 in the barrel 1 ', the operating portion 10 may be operated in the same manner to retract the slider 4'.

[Effect of device]

In order to hold the position of the slider, the rod-shaped object feeding device of the present invention has an engaging projection in the engaging hole, which is directly applied with a horizontal stress that tends to retract the slider during use, like the conventional device. Since the structure for holding the position of the slider by restricting the rotation of the gear as described above is used instead of the structure for engaging, the component force of the horizontal stress acts on the pawl that restricts the rotation of the gear. Therefore, it is possible to reduce the thickness of the pawl of the pawl, by reducing the pitch of the teeth of the gear, and by reducing the thickness of the pawl between the engaging holes or by reducing the pitch of the teeth of the rack, It is possible to obtain a device capable of feeding out a rod-shaped object at a finer pitch than that of a conventional device. In addition, the component of the means for holding the position of the slider becomes a device that is unlikely to be deformed or damaged by an external force that tries to retract the slider.

Also, since the slider is moved back and forth using the rotation of the gear, the slider can be moved back and forth smoothly.
The rod-shaped object can be smoothly fed out and stored from the shaft cylinder as compared with the conventional device.

[Brief description of drawings]

FIG. 1 shows an embodiment of a rod-shaped material feeding device of the present invention.
FIG. 2 is a vertical sectional view of the device, FIG. 2 is a plan view of the device, FIG. 3 is a bottom view of the device, FIG. 4 is a cross-sectional view of a portion II in FIG. 1, and FIG. 11 is a cross-sectional view of the II-II section in FIG. 6, FIG. 6 is a view showing an operating state of the apparatus in FIG. 1,
FIG. 7 is a longitudinal sectional view of a rod-shaped material feeding device of another embodiment, FIG. 8 is a transverse sectional view of a III-III portion in FIG. 7, and FIG. 9 is a transverse section of an IV-IV portion in FIG. It is a side view. 1, 1 '... Shaft cylinder, 2 ... Slit, 3 ... Engagement hole,
4, 4 '... Slider, 5 ... Rod-like object, 6 ... Fixed part, 8 ... Spur gear, 9, 9' ... Claw, 10 ... Operating part, 11 ... Guide part, 12 ... Elasticity Piece, 21 …… Rack, 22
...... Pinion.

Claims (2)

(57) [Scope of utility model registration request] 1. A rod-like object (5) at the tip end in a barrel (1) provided with engaging holes (3) arranged in parallel with slits (2) whose rear ends are opened in the longitudinal direction of different side surfaces. And a spur gear (8) which is sequentially engaged with the engagement hole (3) and is rotatable is disposed at the rear end of the spur gear (8).
An elastic piece (12) provided with pawls (9) engaging between the teeth of the elastic piece (12) is arranged so that the pawl (9) always engages between the teeth of the spur gear (8). In addition, an operating portion (10) for bending the elastic piece (12) to disengage the pawl (9) from between the teeth of the spur gear (8), and a guide portion (10) slidable in the slit (2). Slider (4) that is connected via 11),
Insert the guide part (11) into the slit (2), position the operating part (10) outside the barrel (1), and set the teeth of the spur gear (8) to the engaging holes of the barrel (1). (3) A device for feeding out a rod-like object, which is inserted and fitted. 2. A fixing part for fixing a rod-like object (5) to a tip end in a barrel (1) provided with a slit (2) and a rack (21) each having a rear end opened in the longitudinal direction of different side surfaces. (6) is provided, a pinion (22) that is engaged with the rack (21) and can rotate is provided at the rear end portion, and a pawl (9 ') that engages between the teeth of the pinion (22) is provided. Claws (9 ')
Is arranged so that it always engages between the teeth of the pinion (22),
An operating portion (10) for bending the elastic piece (12) to separate the pawl (9) from between the teeth of the pinion (22) is slid in the elastic piece (12) in the slit (2). Slider (4 '), which is continuous through a possible guide part (11),
The guide part (11) was inserted into the slit (2), the operation part (10) was positioned outside the barrel (1 '), and the pinion (22) was engaged with and inserted into the rack (21). A device for feeding a rod-like object, which is characterized in that